Call register for telephone systems



H.` M. FRIENDLY CALL REGISTER FOR TELEPHONE SYSTEMS Dec. 4, 1928.

Fa'ented Dec. 4, 1928.

UNI-TED STATES -HERBERT M. FRIENDLY, F CHICAGO, ILLINOIS. v

' CALL REGISTER FOR TELEPHONE SYSTEMS.

Application iled October 27, 1920, Serial No. 420,3018. `Renewed June 25, 1926./ I

T he present invention has for its broad objects the metering or integrating of telephonie calls completed through telephone exchange systems. .L

The invention in the specific form chosen for the illustration herein contemplates a so-oalled two-wire common battery automatic telephone system as has been widely used, the present invention necessitating novel departures from equipments heretofore known, so

far as I am aware, in attaining the new ob jects, while retaining certain operative `functions which are known. y

The present invention contemplates the l5 following and other novel objects:

(a) Means for metering or integrating the chargeable calls completed from a subscribers line, taking into account a different charge value depending upon the hour at Z0 which the call is made.

. b) Means for metering or integrating a different Value chargeable on calls to trunks than for normal calls 0r simply local calls.

That is tosay, the present invention also contemplates variable charges depending upon the destination ot' the call; whether the call is local within the o-ilice district, .trunked to certain local numbers within the oiiice district or trunked to a remote oliice district.

(c) Means for metering or integrating the total number of completed chargeable calls regardless of the charge value of such calls.

The foregoing, and other novel objects of the present invention, and the invention itself will be understood from the following description thereof, together with the accompanying drawings designated Figs. 1 and 2.

Fig. 1 is a schematic layout of a system embodying the invention.

Fig. 2 is a: schematic representation of the charge-varying element controlled by a commonly used control time clock through the agency of its closing an electrical circuit at certain periods.

Like parts are similarly designated in the figures.

In automatic or machine switching telephone systems the cost of establishing a connection to the operating company depends almost wholly upon a readiness-to-servc expense or cost, rather than largely to a direct cost ot manually establishing the connections by the eiorts et human agencies at the central ollices, That is to say, the costs for rendering switching service (considered aside from the cost of providing telephonie.connec-l tions with subscribers premises simply) is dependent upon the amount of operatingequipment and correlated plant constructiony necessary to serve the switching needs of the l exchange. The amount of equipment and plant construction required for .such switching will depend not so muclion the total number of calls completed in a day period, or their duration, for example, as upon the number of calls which may be established'or in duration at an particular instant. Obviously enough switching equipment and correlated plant construction must be provided to serve any traffic exigen'cy. Thus, said amount of equipment is irrespective of how long it may be required. I l Records of traffic show there are pronounced periods of heavy traffic demands upon the system. These vary in business districts from residence districts. For exam-- ple, in certain hours of the night there is l small demand for switching in all districts. At certain evening hours there is a relatively large switching demand in residence districtsV and a corresponding'lowdemand in business districts. Again, at certaindayperiods the switching demands in the businessY districts are very great, while not so rela-tively prol nounced inresidence districts; 'i 85 However, as adverted to, .central oilice an plant construction must contemplate instantaneous traffic, rather' than total traiic, regardless of how brief the duration of the max-- imum demand period. .So the charges -incident to the investment in the equipment and plant employed in,v switching has become a ixed charge upon all the users and subscribers regardless of how sparingly the service is used by certain ones of them at periods of general# ly small service demand. v A salient object of the present inventio is to afford a meansl of adjusting the proper charge (based upon cost of supplying the service) to each subscriberdepending upon his demands which influence greater investment for 'switching equipments and correlated plant.

The general principleof the char e, contemplated inthe present invention o tained by a variable-charge integrating meter or impulse register, is to assume (as exampled herein) four points or places as an equitable relative charge for each completed Call at thev los register three polnts; and a call etween ten m'. and six a. m. would register one point. lhe foregoing in this paragraph assumes the call to be one within the same office district, or otherwise a local call.

If, however, the call is to a remote (or to a.

special point) office of the exchange, an additional point will be registered, and if the. call is to a still more remote oiiice, two additionall Moreover, if the call points will register. is to the latter remote office, between eight p. m. and ten p. m., between six a. m. and eight a. m., but onepoint will be registered and if the call is to the former remote office or the latter remote oilice, between ten p; In. and six a. m., no points will be added'on account of the call bemg` other than'a local one.

The term local may be understood as to a general subscriber of the same exchange e districtor oliic'e as'the calling subscriber.

of subscribers in the same oflice.

However,it would not include specific groups l For example, groups from which lines extend to some particulargroup or sub-exchange, and uponL which a special charge is t0 be collected.

calls.

Thus, employing the present invention, an incentive will be inspired in subscribers to avoid callin over the telephone at periods of generallyieavy trailic and thereby reduce the quantityof equipments and plant which would otherwise be necessary for agiven unrestrained total trailc. It will therefore permit much traiiic which the hi h rates which contemplate unrestrained use iscourage, and

the operating company can therefore con-4 sistently formulate rates enabling the public to enjoy a greater use of the telephone service for a given total sum, by suitably timing its Referenceis made to my co-pending application forv U. S. patent Serial No. 522,- 842, filed December 16, 1921.

Referring to Fig. 1, the calling telephone set P is of the usual series type having a sending device 20 of the general class as shown in British patent to Dicker, No. 29,654 of 1910.

The telephone P is connected over conductors 21 and 22 to armature 23 and 24 respectively of a pre-selector of my invention. A said pre-selector is individual to each calling line and has access to a plurality of first selectors, onl one of which is shown. The said first se ectors eachV have access to-a plurality of connectors, only one of which is shown. Of course, second, andeven subseguent selectors can be introduced between the rst selector and the connector, but the adaptation of the present invention does not require them for its successful operation.

The pre-selector is'of the general class as `shown in U. S. patent to Lamb N o. 1,193,160

modified in mechanical and circuit details to operate on ythe so called two-wire principle.

The telephone set Q is similar to P and is shown as a called telephone on bank contact set eleven and is reached ver, line conductors 25 and 26.

In practice it is usual to employ a single battery source and this battery has one of vits poles permanently grounded. Also, it is usualv to employ -a single ground, the said battery and ground being multipled to terminals of the elements adapted to each respectively. To simplify the drawings and description, the battery and ground is shown as independent sources throughout, wherever applied. In the descriptions, when a circuit is traced to a winding, the opposite terminal -of which is shownapplied to grounded battery or to ground, the described circuit is to be considered as traced to ground through the winding and battery, or direct to ground as indicate Referring to Fig. 2. The three cams 27, 28

v'and 29 are mounted rigidly on a shaft 30 spring 33. The spring 32 applies its ground to spring 33 at every fifteen-minute period. Timev clocks adapted to close electrical cir- .cuits at stated periods are-not new, used for master control of secondary clocks. Such a master time clock is adapted for use in the present invention, ofcourse, adjusted to close its control contacts at each fifteen-minute period. as contemplated in the present invention. Thus, the drive magnet -actuates yone time at the end of every fifteen-minute period. The toothed wheel 34 has ninety-six teeth, so it revolves one time in each twentyfour hour' period, driven through the agency of the drive magnet armature A.

Cam 27 isadapted to flex spring 35 against grounded spring 36 from six a. m. until ten p. m. and to allow it t0 remain disengaged llO engaged during-the rest of the twentydour.

hour period. Cam 29 is adapted to -flex spring 39 against grounded spring 40 from ten a. m. until twelve m. and from two p. m.

until five p. 4In. and to allow it to remain dis-v engaged during the rest of the twenty-four hour period.

The cams have been referred to as mounted rigidly to the shaft 30, in fact these cams are mounted rigidly, but interchangeably so the control of the springs 35-36, 37-38 and 39-40 may be varied.4 For example, it might be desirable to change the meter charge as controlled by the cams on Saturdays, Sundays or holidays. This may be readily done by changing the cams to operate the spring sets 35-36, 37-38, and 39-40 suitably. For example, a. cam may be substituted for cam 29 on Saturdays with the operative portion between 2P and 5P omitted. Further, cams 28 and 29 may be removed and not substituted for on Sundays andholidays, etc.

It is to be borne in mind ansingle set of cams and springs, cooperative with the circuit-closing device 31, will suffice for an exchange oilice of moderate size, since it is companion to the interrupter (designated Intr.) and that the interrupter may be common to all meters and pre-selectors of the' exchange oflice. The conductors leading from the interrupter which are common to all pre-selectors and meters are drawnheavy.'

The interrupter device is adapted to cyclically function automatically approximately each ten seconds. However, this pe'- riod may be varied. The function of the interrupter device is to independently short circult the respective pairs of contacts successively and also to independently apply ground from bus-bar 41, to Contact 42 just 'efore the lower pair of contacts 44-.45 are engaged and to apply the said ground on busbar 41 to contact 43 just after disengaging the upper set of contacts 46-47 incident to each upward stroke.

The insulating i'nen'lber 48 joins pivoted and grounded member 49 and the pivoted member 50. The pivot of member 49 has a degree of friction so when member 51 is attracted under the influence. oi the solenoid 52, and member 51 encounters menlber 50, member 49 will disengage from spring 53, deenergizing the solenoid 52 and allowing the plunger carrying member 51 to recede slowly under dash-pot restraint until member 49 is reengaged with spring 53. The said friction causes the member 49 to remain where moved until reengaged by the member 51, whereupon contact 53 is caused to reengage member 49 and re-energize the solenoid 52, causing the member 51 to be raised as before.

This cycle of operations continues automatically, as set forth, approximately each ten seconds.

contact 53. l l

While I have shown an interrupter ofthe solenoid type, it is clear a rotary mterrupter driven by a motor will suilice; it 4being only required that the circuit relations with re.

spect to the contacts be periodically 'changed as set tforth. l

In .elucidation of the present invention the performance of the equipments will be (le-- y tailed under 'diil'erent assumed operative conditions. y

Assuming a call from telephone P to telephone Q. (the listed number of which is 1l1) springs 35437 and 39 being free from It. will be noted'here that bus-bar. 41 is grounded only while member 49 engages their respetive companion grounded springs and theI cams 27, 28 and 29 in the position shown; upon the receiver of telephone P being removed from hookswitch to initiate the call (a`ssuming the pre-selector' to have been restino'A on contacts leading to an idle selector) a clrcuit may be traced from grounded resting Contact 60 of relayrA, armature 24, conductor 22, telephone P, conductor 21,

armature 23, resting contact 6l to winding.

of slow-releasing relay B, causing said B to actuate. A circuit can now be traced from Winding of motor magnet (designated Motor M.) armature 62 thereof, restingcontact 63, conductor 64, winding of relay A, conductor 65, workinfr contact 66 to grounded armature 67. The motor magnet remains inert as it is adjusted to not operate through the obstruction offered by the Winding of relay condition. This will cause armature 23 to engage working Contact 68, and varmature 24 to engaging working-contact 69.l Thls exlA. However, relay A willfoperate'under the tends the conductors 21 and 22 direct to conductors 7() and 71 and yto theline wipers 72 and 73 respectively.' The latter, as assumed, engage bank cont-acts 74' and 75 respectively, leading to the irst sclector.- Conductor 70 includes the outside winding of shunted relay C, the object of which will appear presently. This :lirst selector may be of the specifictype designated YD shown in the cited patent to Lamb. Assuming thls, when a closed circuit condition ensues including the 1 pre-selector leading-in conductors 21 and 22, the release trunk 76l ot' the first selector leading to a contact 77011 the pre-selector companion to the line contacts 74 and 75 will become grounded. Thus, private wiper 78 to whichy attaches conductor 79 will becometo conductor 65 applies a supplemental ground to said 65 thus insuring the ground at the lower windinor terminal of relay A after the period of dlsassociated relay B ex- Contact 83. This applies ground over conductorv 84 through resistance 85, conductor 86 to Vinside winding of relay C,Lenerg izing 4sald wlnding. However, the energizatlon 1snot suficlent to cause-actuation of sald C unless the current in the outside winding thereof acts cumulatively withit.- The currentderived through the outside winding includmg the line relay of the first selector ex'- erts a differential torque on the armatures of relay C, so relay Cremains inert at this ]uncture. Upon the calling party sending *digit l, 'from sending device 20 the first selector will be causedto4 step up` one level and rotate in one position, wipers 91, 92, 93 and 94 engaging and seizing bank .contacts 95, 96, 97 and 98 respectively. Bank contacts 95, 96 and 97 lead over conductors 99, 100 and 101 respectively to the connector (designated Con.). The said connector may be assumed the type Ashown in U." S. v:Reissue No. 13,901, reissued Apr. 13, 1915, to Frank Newforth.

` A feature of thereferred to .connector is its 4 function which causes the current supplied over the callingline tobe reversed in direction incident to the called party responding,

, and this function lends itself to the purposes and object-s of the present invention, that is, controls the registration of the meter device herein contemplated. l

Upon. the calling party sending the last'two digits of thecalled Vnumber (11) the con nector wipers will be caused to step up one level and in one rotary position, the wipers 102, 103 and 104 engaging and seizing bank contacts 105, 106 and 107. The latter three contacts correspond in object and relation to bank contacts 108, 109 and 110 leading from the pre-selector on the calling line. The

.foregoing is assuming that the called line is arranged for two-'way service, which latter, however, is not essential to the purposes of thev present invention, though in practice nearly all lines of an exchange are arranged for two-way service.

The called line seized is rung upon in the well known manner. lAlso, incident to the called party responding the current supplied to the calling party is reversed inklirection; all as contemplated in the cited patent to N ewforth.

The current normally derived serially through the outside winding of shunted relay C ,from the front bridge (or as commonly termed, the line relay) of the connector is of such direction that it (like from the line relay of the selector) tends to neutralize the tractive influence of the energized inside winding; this after the connector is seized by the first selector and until the called party. responds. Thus, the armature of relay C remains inert under the said condition. Howi through the 'calling telephone (the circuit,

path of which includes the outside shunted winding of relay C)`to be reversed in direction, both windlngs of relay C will energize cumulatively Vand the armatures of said C will attract.,A A

Resistance 85 is short circuited by armature 112 engaging its'working contact. 113. The obstructioninvolved in resistance 85 being thus removed from the circuit path including the inside winding of relay C the current strength derived through the inside winding-of -said C-will be augmented to a vvalue wherein it will sustain the armature of relay' Crattracted regardless of the direction off current flow in the outside winding thereof.4

The outside winding of relay C is shortcircuited by armature 114 engaging its Working contact 115. VThis renders the out-side winding of relay 'C inactive. lThe relay C 'is now held actuated and locked by virtue of the current'in the inside winding thereof.

. Bearing in mind the periodic functioning of the interrupter device, the first attraction of its member 51 after relay C actuates causes ground onbus-bar--41 to be applied to ,bank Contact 42 and over common conductor 116, 'conductor 117, armature 118, working contact 119, ,conductor 120, make-before-break contacts 121 and 122of`slow-releasing relay D, armature 124 and resting contact 125 of relay E to the winding of relay D, causing it .(relay D) to attract anddisassociate its winding from conductor 120 before member 51 leaves contact 42 on its upward stroke. The winding of relay D will lock from grounded conductor 65 through armature 123 and its working contact 122. armature 124 and its resting contact 125, and so remains actu-` ated until the expiration of the periodof relay D after the circuit-path to ground from conductor 65 becomes opened, or by relay E actuating and attracting armature 124 from resting contact 125.

Spring sets 35-36, B7-38, and 39-40 are normal (the hour being assumed as two a. In.) therefore there is Vno ground on bank contacts 45, 126, 127 ,-169 and 46. Conductivey member 129 which isjnsulated from (but attachcd to) member 51 electrically joins the to common conductor l13.1, conductor 132, armature 133, working contact 134,l armature 135, resting` contact- 136 to the winding of. magnet G of the total meter device, ('thetotal meter device operated thereby being desigl ,which are equally land uniformly spaced digits l to 7 inclusive. The'said drums' represent the units, tens, hundreds, etc., numerlcal orders. Each succeeding higher numerical order drum turnsone-tenth of a revolution for each complete revolution'of the immediately preceding numerical order drum'. So aline observation across lthe drums at the initial point of the units drum will indicate the total number of' unit steps the-first orunits drum has advanced from 1. Indicating drumsl of this kind are not new as used on counting devices, cyclometers, consecutive number printers, etc. Also, such counting devices have been used, operated by an electromagnet in metering 'traffic in tele phone exchangesand on individual lines of such exchanges, the electro-magnet stepping oradvancing the units drum one-tenth of a revolution incident to each actuation or op erative energization of the said electro-magnet. Further, such meter-devices (usually termed-meters or call counters.` in the parlance of the art) have been used, arranged to be controlled by a connector incident toa called party responding,the meter electromagnet functioning one time and thus ad# vancing the 'units drumv one digit-position incident thereto. Such use as the latter is referred to in the cited patent to; Newforth.-

However, meters heretofore known, so far as I am aware, have not contemplated variable registering. That'is tosay, the recording or integrating of-adiierent value ,under different conditions or' at different times of day, when a registerable call is made. As hereinbefore set forth, the present invention thus contemplates variable registration, and" not simply and only a counting ofthe com# pleted calls to telephonelines of the general i subscribers.

The present invention does also"contem plate a supplemental meter device similar to the total meter device (designated .No. calls M) which simply integrates the number of completed lcalls to general subscribers,

each said call at equal meter value, The latter meter device is similary in` general me chanical details to the total meter referred to. Thus, the meteror register contem lated inthe present invention comprehen s not only a means for recording the total number of calls completed to general subscribers, but

also comprehends an integration of the chargeable values of each said calls. com-A .the call.

pleted, taking into account the time of day the call transpires,l and if desired the destina; tion of the call also.

Returning to the interrupter, after all thel bankl contact pairs' have been engaged by member'129 member 51 applies `ground re-- ceived from grounded bus-bar 41 to contact v43 and over common conductor 137 conductor 138, working contact 139, armaturef140, conductor 141, resting contact 142, make-beforebreak spring 143-to Winding of relayE. Said E will actuate and lock through armature 144 to groundedconduct-or 65 before contact 43 is disengaged by member 51. Armature 135 attracting disengages Contact 136, disassociating the winding of magnet G. This disassociation will vcontinuefas long as conductor 65 remainsy grounded.

Relay E .upon actuating deenergizes relay D by attracting yarmature 124 from contact 125. However, 'an interval exists, due to the slow-releasing characteristic of relay D, wherein a closed circuit exists from the Winding of the number of calls meterdevice magi net-H, working contact 145, armature 146,V working contact 147 to grounded'armature 148, causing the said` H to actuate and advance the cooperating units drum one digit space. This registers a call of" unit value regardless of time of day or the destination of instances, it is desirable .that no switching charge be made.` For example, in calls to Long distance, Information, Complaint, etc., no charge should 'be made. It 10.5 vis contemplated that the connector reaching such departments be modified so the current direction lis not reversed to the calling party upon "the department responding. Again,

the call to such department may route 11u through the selectoronly as contemplated in general in the patent to C. L. Zahm, No. 941,839, of Nov.` 30, 1909. In such event the current supplied the 'calling subscriber willv continue to be of 1 the initial direction. .1lb Under suchconditions relay C (and dependent relay D) will not actuate and ltherefore the meter (comprised of the total meter device and the number-of-,calls-meter device) will not function. ,The outside winding of 12u series relay C being non-inductivelyshunted will offer-'no appreciable obstruction to telel' phonic currents, though included in the telephonic path. v

Upon the servlce .through th(A pre-selector 65 will become ungrounded and allrelays described as locked directly or indirectly to it will deenergize and restore to normal and Vthe pre-selector will be ready for the initia tion of a new lcall; the first selector engaged also restoring. y

Assuming the stated call transpires at nine p. m. in place of two a. m. as first assume'd. Then the shaft will have been revolved so cam 27 Will cause contact springs 35-36 to be engaged. The latter condition will cause ground on spring 36 to be applied to contacts ing, armatures 151 and 152 will engage working contacts 153 and 154 respectively. However, if obstructed ground (as represented by the value of the resistance 155, for example) is` thus applied, armaturell only will engage its said working contact.

Wiper 94 in engaging a bank contact as 98 of the first level is applied directly to ground` and upon engaging a bank contact as 156 of the Second level is applied to ground through resistance 155. All bank contacts of the first level adapted to be engaged by Wiper 94 are commonly connected to unobstructed ground, and all bankcontacts of the second level adapted to be engaged by Wiper 94 are com- .monly connected to grounded resistance 155.

All bank contacts of the third level may be assumed asv ungrounded.- Thus, ground from wiper 94, (when it engages'a bank contact of the first or second levels) applies this ground over conductor 157, bank contact 158, wiper 159, conductor 160, armature161, resting contact 162 to winding of relay F,'ca}`using said F to actuate as set forth consistent with its marginal characteristic. It is clear from the foregoing that if the first selector wiper 94 engages a bank contact 163 of the third levell in reaching Asome other similarly convolved in an extra impulse or impulses apnected connector in access to a' different line group or a line group in aL different exchange oilice, relay F cannot function, and therefore no special or extra trunking charge inplied to magnet G will be integrated by the registry of the. total meter device because thereof.

The function ofcausing relay D to actuate incident t'o bank'contact 42 being engaged upon the first upward stroke of member 51,

after relay C actuates consequent upon a respouse from on the called line will be as before described.

j It will be assumed still that the .present exampled call is to the same telephone Q as before. AThen due to contacts 3536 being in engagement and contact 46 having ground thereon, when member 129 attached to member 51 engages contacts 46-47 conductor 150 will become grounded. Relay F being fully attracted because of wiper 94 being in engage: ment with contact 98'an extra impulse will be imparted to the total meter'device by way of working contact 153, armature 151, conductor 165 to conductor 132, following the two impulses described as applied over conductor 131 and conductor 132. The unitsdrum of the total meter device will thus be advanced three unit steps, representing the toll charge value of the assumedcall at the stated hour. In the latter assumed instance a trunking charge ofone point was made at the assumed time period vbecause the line reached from the first selector passed over one of a group of trunks on the 1st level, to perhaps a remote office or in reaching a line towhich an extra toll is charged. Relays D, E, and magnet H will function as before.

Had a, trunk from the second level of the selector been selected in reaching the connector and telephone Q in the last exampled instance vin lieu of the first level, the same functioning of total meter G Awould have taken place as described, for in either instance armature 151 would be in engagement with Working contact 153.

\ Assuming the stated call tran'spires at eleven al. m. i`n place of two a. m. Then, shaft 30 will have revolvedso cams 27, 28 and 29 will cause contact spring sets 35-36, 3738 and 39e-40 to be respectively engaged. The said contact condition will cause ground on spring 36 to be applied to contacts 1,27 and 46 as before; ground on` spring 38 to contacts 126 and 169; and ground on spring 40 to con-' tact 45; Thus, all lower contacts of each pair (45, 126, 127, 128, 169, and 46) are grounded. When member 51 is raised the first time after relay C actuates relay D will actuate upon contact 42 being-encountered by member 51 as before set forth. Then conductor 131 will be grounded four times successively while member 129 successively engages contact sets l 1j-.44, 126-165, 127-149 and 128-`130, followed by it engaging contact Sets 169-166 and 46-47.

Wiper 94 of the first selectorbeing in en gagement with bank contact 98 armatures/151 and 152 will engage working contacts 153 and 154 respectively, andtherefore the ground lapplied-to common conductor 167 and conductor 168 from contact 166 and ground'applied to conductor 150 and conductor 164 4 from contact 47 will be applied to conductor 132, making six ground impulses applied to conductor 132 incident to the stroke; relays D, E, andF functioning as before. In the present instance, two points of extra registry will be recorded by the total meter as a trunkv ing charge. Of course,vif the first selector l vary the charge 'between certain levels. In comprehensive exchanges there would, of course, be la plurality of-successive selector elements involved in trunk links, the present invention beingparticularly adaptezdto such reached the connector and telephone Q, the third bank level in lieu of the first or secf ond levels as before. assumed, no` trunking' charge would be added because relayF wlllbe normal due the wiper 94 failing 4to receive ground from an engaging bank contact.

The drawing heretQ'attaChed refers'gto a system including a re-selector, 'a selector and a connector. This is by way of example` only, for it is possible'to annex or introduce additional selectors, for to omit'the selector. In the latter case the conductors leadingto wipers 91, 92 and 94fw-ould be applied to. wip

ers 102, 103 and 10a respectively in lieu thereof. In factv the contacts cooperating with' 5 wiper 94 may be on the connector,'us'ed to applications as referredto with relation to the trunking of calls. Further, the present vinvention is applicable to systems wherein opf erators control the interconnection of calling and -called lines as distinct from systems wherein the calling party controls the interconnecting agency remotely through the agency of a calling device as 20 described.

The term'fpre-selector as used in the appended claims refers to a line switch for extending a calling line to an idle s electoras shown, or it may be any adaptation which causes an idle selector to be extended to. a calling line; termed a line finder. Of course, the pre-selector may bevdispensed with and equivalent meter circuits associated. with the calling'line and its associated terminal switch (in long distance service, for example), withing toll charges may be widely altered.

These modifications cited are by wayjof example only. Other modifications vmaybe madev States Letters Patent is:

without as an anilificati'on, or employed in p 'art only ent invention.

`. Having thus described invention-what' I claim as new and desire to. secure by United 1. In a4 telephone call meter mechanism automatic means for recording variable toll charge .values on like calls, regardless of the duration of the call.l i

2. In a telephone call meter mechanism automatic means for integrating. variable lchargefval on successive like-calls regardless of the duration of thecall.

--ing upon the destination of the eparting from the scope oi the pres- 3.. In a-tel'ephonecall metermechanism a means tointegrate variable charge values on successive like calls, the charge values Jde-` pending upon the time ofday each call transpires, regardless of the duration of the call.v 4. a ltelephone call meter mechanism, a

-xneansffor integrating variable charge values on si'lcessi'vefcalls, the charge value dependcall, regardless of the duration of the call. f

5.. In a telephone call meter-,a means 'for-inf tegrating variable char e values on succes sive calls., the' charge va ues of each call ,de-

pending upon the destination-of the call and also upon thetime of day the c/all transpires regardless of the duration of the call.

6. 'In' a telephone system a calling and al called line, a pre-selector terminating the lcalling line having access to selectors and a' connector formlng a temporary connection' train between the callindand the called lines, animpulse register speclfic to the calling line for integrating the number of impulses applied to 1t,'an impulse sending means common to a plurality' of like said coincident connections, and means responsive to an answer from the called line for applying the impulse. sending means operative, to the impulse register and for then disconnecting it for the' duration of the call. "f

7.' 'In a telephone system a calling anda called line, a pre-selector terminating the call-` ing lmehaving access to selectors-and a connector forming a 'temporary connection train between the calling and the .called lines,y an" impulse register specific to the calling line -for integrating th'e number; ,ofl

impulses. applied to it, an impulse sending means common to a plurality of like said co-" incident connections, means responsive. to an answer from 'the called linevfor .operatively applying the impulse sending means tov the "I impulse register, and means for disassociating the impulse sending means for the duration of the call aftera series of impulses has ist/er.

T8. Ina telephone system, a calling andv called'line, a pre-selector terminating the calling line having access ,to selectors and acon? lie been-operatively applied to tliefimpulse l'egp nector forminga temporary connection train i between the calling andthe called lines, an

plied to it, anim ulse sendinl means common to a plurality o like 'said coincident connec tions forpro'jecting series of impulses periodically, means associated with the pre-f selector operative upon a response from the calledline for opcrativelyapplying the im pulse sending means to the impulse re ister,

means for varying the number of impu ses of limpulse register specific to the .calling line` for integrating' the numberof impulses ap- .120

a respective said impulse series whiclmnay be operatively applied to the register, and means for preventing more than one series of impulses beingl applied regardlessy of theduration of a ca f 9. .In a'telephone system, a calling and a :called line, a :pre-selector terminating the call,- ing line having access to selectors and a connector forming a temporary train between the calling and the called line, an impulse register specific to the calling line for integrating the number of impulses appliedto it, ap impulse sending mec anism for projecting series of impulses periodically, auxiliary mechanism including a chronometer-controlled contact closing device for governing the number of impulses in a said series, means associated wit-h the pre-selector 4loperative upon a response from the called line for operatively applying the impulse sending means tethe impulse register and for controlling th number of impulses of a respective said series-which may be operatively applied to the register and means for preventing more than one series of impulses being applied regardless of the duration of a call.

10.- In a telephone system, a callin line and called lines of two classes, a pre-se ector terminating the calling line having access to switches forming a temporary train between the calling line and a called line and includin the pre-selector, an impulse register speci c to the calling line for integrating the number of impulses applied to it, an impulse sending mechanism for project-ing series of V impulses periodically, an auxiliary means for governing the number of impulses in a said series, mechanism associated with the pre; selector operative upon a1 response from a Vcalled line qf one class only for operatively applying one `series of im ulses to the impulse register'regardless of t e duration ofthe .call and for controlling the numberiof iinpulses of a 'respective said series which may be operatively applied to the register.

.11. In a telephone system al callin and a called line, a pre-selector'terminatin the calling line having access to switches orm said impulse register constituting the toll charge value of a completed call te tlie said called line regardless of the duration of the call, and means for controlling the number of impulses of a respective said series. whichv 'may be operatively applied to the register.

UV12. In a telephone system a calling line and a called toll line, other toll lines, a pre-selector terminating the calling line having access to switches forming a temporary train between the-calling and the said called line or any other said toll line called, a first impulse registerspeciiic to the calling line for int'egrating the number'of impulses applied to it, a second impulse register for integrating the number of calls completed to the said called line and also to any other called toll line,

an impulse sending means for projecting series of impulses periodically, means associat- .ed with the pre-selector operative upon a response from .a called line for operatively applying the impulse sending means to the said first impulse register, one series of impulses operatively applied to said impulse register constituting the toll charge value of a completed call under the calling condition, other means for controlling the number of impulses of-a respective said seriesvwhich may be operatively applied to the register regardless of the duration of the call, and further means for causing the said second impulse register to integrate an additional call of unit value ponsequent to. a response from a called said ine.

13. In a telephone system a calling line and a called toll line, other toll lines, a pre-selector terminating the calling line having access to switches lforming a temporary train be- .tweenthe calling line and the 'said called line or any called toll line, an impulse register specific to the calling line for inte rating `toll charge values corresponding to t e line called, an impulse sending Imeans for projecting series of impulses, auxiliary means differently operativecorresponding to a time schedule for governing the number of impulses in said series, and means operative upon` a response from a. called line for operatively applying the impulse sending means to the impulse register, one series of impulses operatively applied to said impulse registerconstituting the toll charge value of a completed call to a called one of said lines regardless of the duration of the call.

14. In a telephone system a calling line and a called toll line, other toll lines, a pre-selector terminating the calling line having access to switches forming a temporary train between tlie calling and thel said called line or` any called toll line, a first impulse register specific to the calling line for integrating toll charge values corresponding to the line called, an impulse sending means for projecting series of impulses, auxiliary means differently operative corresponding to a time schedule for governingthe number of impulses in said series, means associated with` the pre-selector operative upon a response' on a called Vsaid line for operatively applying the impulse sending means to the first impulse register, one series of impulses operatively applied to said impulse register conlll) stituting the toll charge value ofv a completed call toa called one of said lines regardless of the duration of the call, a second impulse register for integrating the number of calls completed to the said called line orto any other said Atoll linefncalled, and means for causing said second impulse register to integrate an additional callof unit value consequent to azresponse ena called said line.

a pre-selecto terminatin V`calling line hav- -a in accessftp switches iiapted to beinter-- lin a temporary train .between .the'calhng an a-called line, 'a first impulse register specific tothe calling line for integratingtoll charge values corresponding to the line called, an impulse sending means tor projecting series of impulses, auxiliary means differently operative corresponding to va time schedule for governing the number of impulses in said series, means operative upon a response on a called said line for operative- 'y applying the impulse sending means to the st impulse register, each series of impulses operatively-applied to said impulseregister constituting the toll charge value of-a coinpleted call to the called line-regardless of the 'duration of the call, a second impulse register for integrating the number of calls completed to the said called line, and means for causing s aid second impulse register to integrate an additional call of unit value consequent to a. response on the called said liner 16. In a telephone system, telephone lines, switches forming a temporary train between a calling and a'called line, an impulsefregisapplied to said impulse register constitut- Cil Aing the toll charge value of a completed -call to the.. called line, and means for rendering theregister non-responsivefto the impulse sending means afterthe-reigster has integrated a series of impulses.

1 7.' In a telephone' system,.teleplione lines, switchesiforming a temporary'train betweena calling and a called line, a rstim'pulse reg'- ister specific to the calling line for integrating toll charge values corresponding to theA line-called, an im ulse sending means` for pro- ]e'ctlng-'series ofp impulses, auxiliary means differently-operative 'corresponding 'to a time schedule for governing the number of impulses in'said series, means operative upon a response from the called line for operatively applying the impulse sending means operative-to the. register, one Seriesof impulses 15. Inja' telephoney system, telephone lines,'

register,

' impulses vto said register, t

operatively applied to said impulse register constituting the toll charge value of'a,y completed ca l to the called line, a second impulse register tor integrating the number of calls completed to the said .called line, means for causing saidsecond impulse registerto integrate" an additional call of unit value consequent to a response on the called line,

and'meaiisor rendering the impulse regis' ters non-responsive after the registers have integrated.

18. In a telephone-system, telephone lines,

switches forming a temporary connection train between a calling and a called line, an

impulse register specific to the `calling line for integrating toll vcharge values corresponding to the line called but irrespective of the duration of the call, an impulse sending means common to a plurality of like said connections for projecting a series of impulses for operating the register, a circuit closing contact and means inc uding an'auxi'l-A iary wiper of one of the switches ycooperating with 'the circuit-closing contact for altering the number of operative impulses in a series effective to only the specific impulse register' of the first said connection.

19. In a telephone system, tele hone lines, switches adapted to be interlinke under control of-means on a calling line forming a temporary connection train between Athe calling n and a called line, an impulse register 4specific to the calling line for integrating toll charge values corresponding to the line called operative upon responseon the called line but irrespective-ot' lthe duration` of the call, an impulse sending means common to a plurality of like saidrconnections. for projecting impulses for operating the register, a circuit closing contactand means including an auml-` iary wiper of one ofthe switches cooperating with the circuit-closing contact for altering n' the number of operative impulses in a series effective to only the lspecific impulse register i of the lfirst said connection.

20. In a telephone system, connected tele'- phone` lines, a call register, a device for oper latively projecting seri-es of impulses to said means .controlled Iby a manual operation on one'of-'the lines following the'connecting of the lines for applying a series of e number of ,impulses in the series being automatically determined by the' time of'day the said manual operation occurs, and means for disconnecting the said means at the termination of the seless of the duration of thel connection.

21. In a telephone system, connectedtele'- phone lines, a call register, a device for oper,-

. ries before the lines are disconnected regardatively projecting impulses to said register in a series, means controlled by a manual operation n one o f the lines following the connecting of the lines for applying the im-.

pulses to said register, the' number of impulsesin'the bein automatically def I l) calling line, a called line, mechanism asso-4 ciated with the toll assessing device for vary lng the amount assessed for a connectlon ex- .tendedfrom the calling line tothe-trunk line,

mechanism associated with'the toll assessing device for varyinv the amount assessed for a connection extendaed over the trunk line por# tion-'independent of the Aamount assessed for the ortiony of the connection'from the calling ine to the trunk line, meansA for connect- 'ing the callingline with the `called line' over thetrunk line as a link of the connection, and means whereby the amount assessed for .-a completed connection will ual the sum of the assessments on the portlon of the co-nnection from the calling line to the trunk line -and the portionof -the .connection over the trunk line.

23.. In a telephone system, a calling line, a

trunk line, a toll assesslng device for the callin line, a called line,` mechanism associated with the toll assessing device for varying the amount assessed for a connection ex'- tended from the calling line to the trunk line, mechanismassociated with the toll assessing device for varying the amount assessed for a connection extended over the trunk line portion independent of the amountv assessed for the ortion of the connection from the call'- ing line `to the trunk line, means for connectvingv the calling line with the called line over the trunk line as a'link of the'. connection,

y means whereby the amount' assessed for a conne'ction'will-'equal the sum of the assessments on the portion of the call from thecalling line frecording the total assessment.

to the trunk line and the portion of the conneotion over the trunk line, and means for 24.' In a telephone-system, a calling line, a

.trunk line, a toll assessing device associated `with the calling line, ,a called line, a chronometer controlled mechanism associated with the-toll assessing' device for hvarying\the amount for'a connection-extended l ent of the amount i the connection:

f Oit a connection' exindepende n or the portlonof 4 tuile 0f day, means for connecting .the 'calling line with the called line overthV trunk lineas alink of .the connection,` means whereby the amount" for a connection 'will equal of the ments oxpthe portion of the connection from the calling line tothe l trunk line and theportion of the connection over the trunk line. l

25. In a telephone SySmya. callin line, a trunk line, a toll assessing device or the 'g calling line, a called lline, a linked connection between the callin -line andthe called line involving two said ine sections, toll as Qseing mechanism independently operated I 26. In a telephone system, a calling line,

a trunk line, a toll asseing device for the calling line,`a called line, a linked connection between the Ycallingline and the called line involving two said linel sections, toll assessing mechanism independently yoperated from each section of the connection Vcontrolled over the called line nsive to a manual oper# ation, means where y the amount assessed for sessments for each said section, means whereby the amount assessed for each section will depend upon the time of day at whichthe said manual operation occurs, and means for recording the total assement on the tollassessing device.

a trunk line, a toll assessing device for the callingline, a called line, a linked connection between the calling line and the called line involving two saidline sections, toll assessing chronometer operated responsive mechanism independently controlled to va connection specific to each section of the connection controlled' over the-calledline' responsive to a manual operation, 'and means whereby the amount a the sum of the assements for each said secvtion and depend upon the time of day thesaid manual operation occurs.

- 28. In al telephone system, a calling line,a plurality of trunk lines, a toll assessing device for vthe calling line, a plurality of called lines, means for linking successive connecf A I u tions from the calling' line over therespec -v from the calling line to th e;tfr unk"l1ne, a tive trunk lines to dil'erent ones ofthe called? f hronometerqcgntrolled mechanismgjassol 'ciated with,theftbllassessngdeviceffor varythe :c uw. I Y tended over tlietrunk lines, variable toll assessing mechanism controlled from the respective trunk lines whereby the 'assessed toll Ythereoverwill depend j upon a specilc condition thereof made vaa conntionwill equal the sum of the as 27 In atelephone system, a calling line,

= -o fora connection willv equal.

riable-with the time of day, toll 'assessing -fmechamsm associated with the calling line independent of a linked trunk line, and means wherebythe amoimt assessed for a call will equal. thejsuln 'of the assessment of the said callin line mechanism andthe assessment for the trunk-line. p

29. In telephone System, a

vcalling line,

the toll assessing devicewhereby it will record the sum ofthe toll charges of therespective a plurality of trunk links, a toll aessing device for the calling line, alcalled line, mechanism for recording independent toll charges for the respective said rtrunk links, means to the time of day, and means to operate links.

30. Ina telephone'lstem, a calling line, a plurality of trunk `li s, a toll assessing device for the calling line, a called line, mechanism for operating the assessin device to record independent toll charges or the respec-l tive said trunk links,-means to vary ythe latter said toll charges according to the'time of day, vand means ci'mtrolledy over the calling line to operate the toll assessingdevice wherebv it will record the sum of the toll charges of the respective links.

' 3l. In a telephdne system, a calling line, a

plurality vof trunkv linksfaioll assessing. de-

vice for the calling line, a calledline,` mecha- A nism for operating the assessin device to recordindependent toll charges or the respective s'aid trunk'links, the said mechanism being disabled dependent upon a response on the called line for enabling itto operate fromV normal, and lmeans effectively controlled con-l sequent upon the response on the called line to record thesuniof the toll charges of the respective links. y

32. In a telephone system, a calling line, a plurality of trunk links, a called line, a toll assessing device associated with the calling line, mechanism for recording independent ftoll charges for the respective said trunk links in a connection from the calling to the called. line', the charges appertaining to eac-h said link being subject to lindependent variation depending upon the time of daythetoll is assessed, and means for causing the'toll assessinvf device to register thetotal charge involved in the ,respective said links of a call.

33. In a telephone s'ystem,`a plurality of line sections, a'polarized relay associated withl a first. one of the sections, means y pr inter- :linking the saidsections 'in tandem, `asou'rce of current apl lied from afsecond Aone of the e said first section 'and to the.

sections to t winding ofsaid 4relay ylint operatively` non-f effective thereto', means or. c ia'ngingthe -direction of current flow 'i iei'eby the current will thereafter be operatively effect-ive to the means to revent the'relay' relay, means to restore the direction of cur-'- rent flow to that .primariy existing, and

rom being operati'vely a ec'ted because offthe said-restoration of the direction of cur'ren't llow.

34. In a telephone system, a lplurality of line sections, an electro-polarized relay, a polarizing winding f or said relay, an energizingsource for said polarizing winding, a resistor normally included in a ath with said polarizing winding, a secon Y. winding the latter said toll charges in accordancev for said lrelay associated with first one of the" said sections, means for interlinking the said sectionsl in tandem, a 4second source or current applied'from a second one. of the said sections to. energ'fizethe said second winding opposingly to the-said.polarizinglwinding, means for reversing the direction of current projected from the said second source by the two said-windings will energize the relay cumulatively to operate it, ,means to short-circuit the resistor lconsequent to the operation of the relay Whereby'the electroto the Said second one of s'ai'd sections where4 polarizing winding will become energized to f predominate t e said second winding regardless of the direction of current therein, and

means to maintain the resistor short-circuited lconsequent tothe reversing of the direction ofycurrent regardless of any subsequent change in the direction of the current. 35. In a telephone system, a plurality of line sections, an electro-polarized relay, a polarizing winding for said relay, an enerizinv sourceior said olarizin Windin a D 7 resistor normally included a path with said polarizing windinfr, a second winding for said relay in a series path with a portionof a first one of thesaid sections, means for interlinkng the s'a/id sections in tandem,

a source of current applied from a seccessive second one of thesaid sectio s to` energize the sai second winding oppojingly to the said polarizing winding,.mean for reversing the direction. of current projected. from the said predominate the said. second'windingregardless of the direction ofcurren't therein, and,

means to vmaintain the -resistor short-circuited consequent to the reversin of the direction of' current regardless o any subsequent change in the-direction of current in the said second winding.

' `36. A relay having a first electro-polarizi ing windinv on its core, an auxiliary resistor included with saidwinding, a source ofenergizing 'current-:tor said Winding,v a second 1ndependently 'energized' winding electro-niag-l iio netically'related to the' core of the relay in lco'mmon 'with said. first winding, the relay bein operatively affected when' the. two said win ings are energized cumulatively, but

not operatively adected when the windings are ener izing opposingly, means for reversing the irection of current in the said second winding, .means for. altering the relationA of `the said resistor whereby .the current in the .said first winding then pi'cdominates the iniiuenca of the .said secondl winding regardless of the direction of current traversing the said second Windinggand means forcausvingthe said first Winding to predominate the said second winding regardless of the direc-A may be applied in opposite 'directions where. by the relay will actuate if the current in the said operative winding is in a predetermined direction and remain normal if it is not, and

means to predominate the said polarizing winding upon the actuation of the relay so that the relaywill thereafter remain actuated regardless of the direction of current inthe operative winding.`

38. In atelephone system, a calling line, a

trunk line, a toll assessing device for the callingline, a called* line, mechanism associated with the toll assessing device for varying the amount assessed for a connection extended from the calling line to the trunk line depending upon the time of day, mechanism yassociated with the tollassessing de'vicefor varying the amount assessed for a connection exi ltended over the trunk line portion independf ent of the amount assessed for the portion ofthel connection vfrom the calling line to the trunk line', means for connecting the calling y-io line with the called line over the trunk line as a link of the connection, and means whereby the amount assessed for a completed connection will equal the sum of the assessments on the portion of the connection from the calling line to the trunk line and the portion of the connection over the trunk line.

39. In a telephone system,.a plurality of pairs of connectedy calling and called telephone lines, a call toll register for the calling line of each pair, a device common to all the call registers for projecting ai train of im-A pulses operatively effective to tlie respective said registers coincidently, and means independently f controlled over the respective called lines of .the pairs for causing only the lregister on its respective paired line to be e ectively operated.

40. In a telephone system, a plurality of pairsof connected calling and called telephone lines, a call toll register for the calll ing line of each pair, .a device common to all the call registers for projecting a train of .impulses operatively effective to the respec- .tive said registers coincidently, means independently controlled over the respective called lines of the pairs for causing only the register on its respect-ive paired line to be effectively operated, and means operative dc'- pendent upon a trunk line being interposed between the calling and a called line pair foil causing a different train of impulses to be applied by the said device to the register of its connected calling line than to registers of wherein no trunk line is interposed. 41. In atelephoiie svstein, -a plurality veach calling line respectively, called lines to which the respective calling lines are tempo# -Vcalling lines of said paired l connectiolis ,.4

calling lines, a. call toll meter companion to rarily connected, a mechanism for commonly operating the said meters to register different tolls in accordance withl what called line is connected to its companion calling line, and

means controlled over the calledxliiie of a connection to cause the said Amechanism to operate the corresponding calling line toll meter independentl other meters coinci ently operated thereby.

42. In a telephone system, a plurality of calling to eac calling line respectively, called lines to which the respective calling lines are tem-` -po'rarily connected, a mechanism'for coinmonly operating the said meters to register of; the operation of lines, a call toll meter companion' I A different tolls in accordance with what called f I line is'connected to-its companion calling line 'I and the time of day the registration occurs, and means controlled over the called line of a connection to cause the said mechanism to joperate'the corresponding calling linetoll meter independently of the operation of other meterscoincidently operated'thereby;V

431 In a telephone system, a plurality ofy calling lines, a toll meterV com anion to each calling line respectively, call lines to which the respective calling lines are temporarily connected, a' periodically operating mechac' nismcommon to the calling line meters for sending an impulse train at eachf operation, thel train varying with the 'time of day,

means controlled over a connected called line.; for causing the said mechanism to applyl its L next succeedingltrain of impulses 't0 the meter of the respective companion calling los' line, means automatically controlled by the said mechanism for., reventiiig more' han one train to be applied e ective to a specific meter durin asustained connection of its companion ca. ing line, and means whereby the said of coincident said connections without affecting its normal operation with respect to any said connection.

44. In a telephone system, ja plurality of Vmechanism-may commonly 'serve a plurality iis calling lines, a toll meter-companion to each calling line respectively, called lines to which f the respective calling lines are temporarily connected, a perlodic'ally operating mechanism common-to the calling line meters for sending an impulse train at each operation,

means controlled over a connected called line for causing the said mechanism to apply'its next succeeding train of impulses to the meter of the respective companion calling line means automatically'controlled by the said mechanism for preventing more than 'one vtrain to be. applied effective to a specific meter during a sustained connection of its calling line respectively, calle linesto which the respective calling lines are temporarily connected, aperiodically operating mechamsm oommon'to the calling line meters for sending van impulse train at each operation, the train varying with the time of day, means controlled over a connected called line for causing the said mechanism to applythe next glcceeding train of impulses to the meter of the respective companion` calling line, and

means automatically controlled by the said mechanism oifzpreventing more `than one train to vbe applied eiective to a specific meter during a sustained connection `of its companioncallin line.l

46.- In a' te ephonesystem, a-plurality of calling lines, a tollmeter'companion'to each for causing the said mechanism toapply its next succeeding train of impulses to the meter s calling line respectively, called lines to which `the respective calling lines are temporarily e connected, la periodically operating jmechanism common to the calling line meters* for sending an `impulseftrai'n at each opera-tion, means controlled over a connected called line of the respective companion calling line, and means automatically controlled by the said mechanism for preventing morethan one train to beapplied effective to a specific meter during a sustained connection 'of 'its companion calling line. v-

iy f 47. In a telephone system, a calling line',

a toll meter companion to the calling line, a

v called line; the callinv-andncalled .line being temporaril connecte a periodically operating mec anism for sending an "impulse train at each operation, means controlled over the` called line for causing .the said mechanism toappl .its next succeedingtrain of impulses to t eftoll meter, and means automatically controlled by the said mechanism for preventing more than one train to be applied effective to the toll meter during a sus. v I

a first anda second toll meter compamon to tained connection. v

48. In a .telephone system, 'a callin line, a toll meter companion to the calling ine, a called line, the calling and called line being temporarily connected, a periodically operat .ing mechanism for sending an impulsev train at each operation, the train varying with thev -time of' day, means controlled over thecalled line for causin the said lmechanism to apply its next succee ing train of impulses to the toll meter, and means automatically controlled by the said mechanism for preventing more than one train-to be applied effective to the toll meter during a `sustained connec- 49. In a telephone system,v a callinginline,

a toll meter companion'to the v'calling y `called line, theA callin and called line be` temporarily connecte a periodicallyopera ing mechanism for sending an impulse train at each operation, the train varying withvthe time of day, means controlled over. the calledline for causing the said mechanism to apply its next succeeding train of impulses to the toll meter, means `lor preventin less than a complete train being applied e ective to the. 4meter, and'me'ans automatically controlled by the said niechanismforv reventing more than one train to be appie'eietive to the toll meter during a sustained' colllibtion.

a toll meter companion fto `the"'"callingline,

a called line, the calling and called line being temporarily connected, a periodically operating mechanism for sending an impulse train at each opera't1on, means controlled over the called line for causing the said mechanism Vto apply its next succeeding train of impulses to the toll meter, means for preventing less than a complete train beingapplied 'effective to the toll Ameter, and means ,automatically `controlled by ,the said mechanism for preventing more than one train to be applied ,effective to the v,toll meter-.during a sustained connec- 51.` In atelephoney system, a calling line, a irstand a lse ond toll meter companion to the calling line; a called line, the calling'and called line being temporarilyv connected, a

periodically operating-,mechanism for sendmg an' impulse train 'at each o eration, the train ing with vthe time o day, means lcontrll` :over the' called line for causing the sad'mechanism to apply its next succeeding `train ,of impulses to the iirst toll meter,

means forpreventing less than a complete train being applied elective to the first tolll meter,meansautomatically controlled by the said, mechanismor preventing more than one train to .be applied effective to the toll `meter during. a sustained connection, and

means vfor applying one impulse tothe second toll meter incident to applying the train effectiveto'the first meter. y

52. In a telephonesyste'm, a calling line,

the calling line, a called line, the calling and called line being temporarily connected, a periodically' operating mechanism for sendlng an im ulse tra-in at each operation, means vcontrolle 'over the called line for causing calling line,

controlled over the called line for causing the said mechanism to apply its next succeeding train of impulses to the first -toll meter, means for preventin less than a complete train being applied e ective to the 'first toll meter, and means for applying only one impulse to the second toll meter during a sustained connection between the calling and called line, the said one impulse being applied incident to applying a train eifective to the first meter.

454. In a telephone system, a. calling line, a toll meter companion to the calling line, a

called line,lthe calling and called line beingtemporaril "connected, a periodically operating mech nism for sending an impulse train at-each operation, means controlled over the called line for causing the said mechanism to apply'its next succeeding train of impulses to the toll meter, and means for preventin less than a complete train being applied e ective to the toll meter. 55. In a telephone system, a calling line, a

toll meter companion to the callingline, a

called line, the calling and called line being temporarily connected, another calling and called line like connection, a periodically operatingmechanism common `to the said lconnections for sending an vimpulse train at each operation, means controlled over a called Said line for causing the said mechanism to apply its next succeeding train of impulses to the toll meter' of the companion callinglineof the last said called line, and means for preventing less than a completeV train being applied effective to the toll meter.

56. In a telephone system, switch mechanism for extending connections between calling and called lines of the system, a charging device for assessing toll charges for respective said connections, and means whereby a specific predetermined charge will be made by the charging devicel on the respective connections which specific charge will be variable only dependent upon which specific said lines are connected and upon the time of day the connection is made.

57. In a tele hone system, switch mechadevice for assessing and recording toll charges for respective said. connections, u and means whereby a specific predetermined charge will be made by the charging device on the respective connections which specific charge will be variable only dependentupon which specific said lines are connected and Lineale!)A 58. Ina tele hone system, 'switch mechanism for extending and thereafter destroying talking connections between ,calling and called lines of the system, a charging device for assessing tollfcharges for'respective said dtalking connections, andneans for varying the charge for a sinvle talking connection 'dependent uponthe time'of day the talking connection is effected irres ective of the time of day the connectionis estroyed.

59. In a'tele hone system, switch mechanism for exten ing andthereafter destroying talking connections between calling and called lines of the system, means for automatically assessing a toll charge for the connection regardless of what time of day the connectionoccurs,and means lfor assessing an additional toll charge only provided the connection occurs at a predetermined specific time of day regardless of when it is destroyed.

60. In a telephone system, switch mecha-` nism for extending and thereafter destroying talking connections betweenV calling and called lines of the system, means'for alitomatically assessing a toll charge for the con-`- nection regardless of its duration, and means for assessing an additional charge forthe connection which latter char e will vary in amount dependent upon the time of day the connection occurs.

nism for extending and thereafter destroying talking connections between calling` and called lines .of the system, means for automatically assessing a toll charfre for the connection regardless of its duration, and means for assessing Ian additional charge for the connection which latter charge will vary in amount dependent upon the time of day the connection occurs regardless of the -duration of the connection.

62. In a telephonesystem, telephone lines,

switches forming a temporary connection train between a calling line and a called line, an impulse register specific to the calling line for integratingtoll charge values corresponding to the line called but irrespective of the duration of the call, an impulse sending means common to a'plurality of like said connections for projecting a series of impulses for operating the respective 'registers coinci- 4 61. In a telephone system, switch mechalos lio

dent-ly, and means for alteringthe number of operative impulses in a said'jseries effective to only the specific impulse register of the VVfirstsaid connection.

nism for exten ing connections between call ing and called lines of the system, a, charging" for integrating toll charge values correspond` ling to the line called but irrespective of the duration ot the call, an impulse sending means common to a plurality of like sai-d connections for projecting a series of impulses ior operatsendingthe series of diierent number of impulses to the registers will be equal and coincident.

64. In a telephone system, switch mechanism for extending connections between calling and called lines of the system, a charging device for assessing a toll charge for respective said connections, and `means whereby .the removal of the receiver of the telephone assessing device forthe calling line', means on the line called will cause a toll charge to be assessedy by its corresponding charging device regardless of. hdw soon the receiver is replaced but variable in amount with the time of day thereceiveris removed.

65. Tn a tele hone system, switch mechanism for exten mg connections between calling and called lines of the system, a charging device for assessinga toll charge for respective said connections, means 'controlled from the calling line for destroying the connection at will, means whereby the removal of the receiver of the telephone on the called line will cause the toll charge'to be assessed regardless of how soon the receiver is replaced, and means for preventing .I the connection from being rlestroyed if the receiver of the telephone on`the called line has been removed until a toll charge has been assessed regard-V less of the fact it may be replaced before the assessment has been made;

66. In a telephone system, a calling line, a trunk line, a called line, switch mechanism -or linking'a connection from the calling line over the trunk'line to the called line, a toll for operating the assessing device for calls completed from the' calling line to the calle-d v line wherein a specific' assessment is made forv the use of the trunk line in the connection,

and clock-f :ontrolled means for varying the said assessment in accordance with the time of day the call is completed irrespective of any other tollassessment made for the conneetion.y -p

67. In a telephone system, a calling line, a

trunk line, a called line, switch mechanism for linking a connection from the calling line over the trunk line to the called line, a toll assessing device for the calling line, and means operated responsive tothe party on the called line removing his receiver in responding to the call to cause the assessing device to operate to assess a charge for the connection, a charge depending upon the time of day the pall transplres, and a charge for the trunk 68. In a telephone system, a calling line, a trunk line, a called line, switch mechanism for linking a connection from the calling line over the trunk line to the called line, a toll pending upon the time of day the call trans pires, and to then operate to assess a charge for the trunk line.

69. In a` telephone system, a calling line, a

trunk line, a called line. switch mechanism for linking a connection from the calling line over the trunk line to the called line, a toll assessing device for the calling line, and means operated responsive to the called party removing his receiver from the switch-hookl in responding to cause the assessing device to operate to assess a charge for the connection,

a charge depending upon the time of day the call transpires, and a charge for the trunk line wherein the total charge for the connection is the sum of said individual charges and variable with any one of them.

70. A relay having a first electro-polarizing winding on its core, a resistor included serially with said winding, asource of energizing current for said winding and series resistor, a second independently energized winding electro-magnetically related to the core of the relay commonly with said first winding, an armature of the relay, means for reversing the direction of current in said second winding, means for operating the armature to eX` clude the resistor from the energizing circuit of the polarizing winding responsive to said reversal, and means responsive to the operasistor, a second independentlyr energized winding electro-magnetically related to the core of the relay commonly with said first winding, an armature of the relay, means for reversing the direction of current in one of said windings, meansior operating the armature for excluding the resistor from the energizing circuit of the polarizing winding responsive to said reversal, and means responsive to the operation of said armature to lock it in, its actuated position regardless of the direction of current traversing the said second winding.

72. A relay having a first electro-polarizing winding on its core, a resistor associated with said winding, a source of energizing current second independently energized winding electro-magnetically related to the core of the relay commonly with said irst winding, an

-for said winding and associated resistor, a

armature of the relay, means for reversing the direction of currentin oneof said wind` ings, means for operating the armature to augment the current strength in the energizing circuit, of the-,polarizing winding responsive to` said reversal, and means responsive to the operation of said armature to lock it in its actuated position regardless of the direction of current traversing the saidv second windin v 73. A relay thaving a first electro-polarizing Winding on its core, a resistor associated with said winding, a source of energizing current for said Winding and associated resistor,

a. second independently energized Winding electro-magnetically related to the core of the relay commonly With said first Winding, armatures of the relay, means for reversing -the direction of current in one of saidwindings, means for operatingr the armatures and to affect the rela-tion of the resistor with respect to the'polarizing Winding responsive to said reversal and means responsive to the said affected relation of the resistor for locking the armatures in their actuated position regardless of the direction of current traversinnr the said second Winding.

74. In a telephone system, a plurality of calling lines, a toll meter companion to each calling line respectively, called lines to which the respective calling lines are temporarily connected, a periodically operating mecha'-I trains of fimpulses, automatic means controlled by a clock in accordance with the time of day forl varying the number of impulses in each said train.

76. In a. mechanism for sending su'cessivc trains of impulses, a plurality of conductors,

.means for sending a train of impulses applied interchangeably over said conductors, and automatic means controlled by a clock in accordance with the time of day for varying the number of impulses in each said train.

,77. In a mechanism for sending successive trains of electrical impulses, means whereby the first and last impulse of a train will be uniformly spaced regardless of the number of impulses in the train, and means controlled by a clock in accordance with the time of day for varying the number of impulses in a said train.

78. In a mechanism for sending successive trains of electrical impulses to a conductor, means for sending successive trains of said impulses continuously, and .means whereby the first and last impulse of a train Will be uniformly spaced regardle of the number of impulses in the train, and means controlled by a clock in accordance with the time of day for varying the number of' impulses in said trains wherein consecutive trains of said impulses may consist of the same number of impulses foreach train.

In witness whereof, I hereunto subscribe my name this 21st day of Oct. A. D., 1920.

HERBERT M. FRIENDLY. 

